Electronic cigarette



FIG. 1 is a front view of an electronic cigarette;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left view thereof; and,

FIG. 7 is a top, right, rear perspective view thereof.

The broken lines in the drawings are directed to environment and form no part of the claimed design. 

CLAIM I claim the ornamental design for an electronic cigarette, substantially as shown and described. 